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1 vote
What is a half life?

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User Jisson
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2 Answers

6 votes
its the time taken for the radioactivity of a specified isotope to fall to half its original value. hope this helps u
answered
User Insou
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8.2k points
3 votes
Basically how long does it take for half of a the isotope sample to decay.
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User Bootsmaat
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